APETALOUS EXOGENS. 



LXXIX. NYCTAGHNAOBiE. Fotjr-o'clock Family. 



499. OXYBAPHUS, Vahl. (OXYBAPHUS.) 



(1816.) O. nyctagineus, Sweet. 



AlHonia nyctaginea, Michx. Pursh, FI. I., 97. 



Eocky or sandy places very rare. On sand banks at the mouth of 

 Eainy Eiver, close to the Lake of the Woods. (Macoun.) On sandy 

 shores, southern shore of Lake of the Woods and clay banks, Wood 

 End, Souris Eiver. (Dawson.) 



(1817.) O. hirsutus, Sweet. 



AlUonia, hirsuta, Pursh, Fl. I., 729. 



On sandy or gravelly slopes, rare and local. Sand hills along Pine 

 Creek, Man. ; and in the Qu'Appelle valley near its confluence with 

 the Assiniboine, also on sandy ridges north end of Old Wives Lakes. 

 (Macmm.) About Port Carlton on the Korth Saskatchewan. {Brum- 

 mond.') 



(1818.) O. angustifolius, Sweet. 



AUionia linearis, Pursh, Fl. I., 729. 

 Calymenia angustifolia, Fraser, Cat., 1813. 



On dry gravelly slopes, eastern end of Cypress Hills. (Macoun.) 

 On gravel at Antelope and Medicine Hat along the Canadian Pacific 

 Eailway. (J. M. Macoun.) Along Belly Eiver near Port McLeod ; 

 also sterile soil along the Milk Kiver, 49th parallel. (Dawson.) 



500. ABRONIA, Juss. (ABRONIA.) 

 (1819.) A. umbellata, Lam. 



In sand, coast of Yancouver Island at Victoria and Cadboro Bay. 

 (Fletcher.) 



